| Index | Somersworth | New Hampshire | National |
| Income per capita | $47,938 | $52,737 | $44,883 |
| Median household income | $100,680 | $104,022 | $81,333 |
| Median income owner occupied | $112,484 | $125,944 | $106,172 |
| Median income renter occupied | $76,074 | $61,008 | $52,080 |
| Median earnings male | $65,252 | $62,075 | $54,343 |
| Median earnings female | $45,674 | $44,274 | $38,439 |
| Unemployment rate | 3.1% | 3.6% | 4.9% |
| Poverty level | 8.1% | 8.5% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 2.8% | 2.8% |
| Manufacturing sector | 29.2% | 29.2% |
| Financial & insurance services | 10.3% | 10.3% |
| Wholesale & retail services | 13.4% | 13.4% |
| Public administration | 6.9% | 6.9% |
| Transportation, warehousing & utilities | 9.5% | 9.5% |
| Education, health & social services | 4.2% | 4.2% |
| Other | 21.1% | 21.1% |
| City | Population | Household Income | National Avg. |
| Kittery Point, ME | 1,059 | $156,007 | 91.8% |
| Cape Neddick, ME | 2,635 | $132,317 | 62.7% |
| Portsmouth, NH | 22,060 | $115,727 | 42.3% |
| York Harbor, ME | 3,609 | $114,711 | 41.0% |
| Dover, NH | 33,095 | $110,929 | 36.4% |
| Somersworth, NH | 12,381 | $100,680 | 23.8% |
| City | Population | Household Income | National Avg. |
| Babylon, NY | 12,378 | $192,284 | 136.4% |
| Rossmoor, CA | 12,384 | $206,112 | 153.4% |
| Sidney, BC | 12,386 | n/a | |
| Neosho, MO | 12,375 | $65,594 | 19.4% |
| Lantana, FL | 12,390 | $79,673 | 2.0% |
| Somersworth, NH | 12,381 | $100,680 | 23.8% |